Aim Sports Ar5cub3 Upper 5.56x45 16in Nitride Barrel 7075 T6 Receiver Mlok

The Aim Sports AR5CUB3 Complete Upper Assembly delivers a ready-to-build platform for 5.56x45mm NATO AR-15 configurations, featuring a 16" Black Nitride barrel crafted from 4150 chrome moly vanadium steel with a 1:8 twist and an optic-ready design that accommodates a variety of sights and optics. The upper includes a durable 7075-T6 aluminum receiver finished in Black Hard Coat Anodized for rugged field performance, paired with a 15" M-LOK free-float handguard that provides ample mounting versatility for accessories while maintaining a slim, heat-dissipating profile. This complete upper emphasizes reliability and component quality, enabling smooth cycling and precision alignment without the need for additional machining. Ideal for sport shooters, hunters, and range enthusiasts, it supports modular builds and rapid deployment in a variety of shooting scenarios, from precision bench work to dynamic field applications. By integrating a robust barrel, resilient receiver finish, and a full-length M-LOK platform, this upper assembly enables consistent accuracy, easier accessory customization, and a streamlined pathway to a high-performance AR-15 setup.